Need help reg rhel linux cluster.

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Greetings,
I am a newbie in the process of setting up a 2-node cluster in rhel 6.4 for learning. I have deleted a node from the cluster using the conga and messed up something else which I can't remember. Now I want to add the node back to the cluster but its saying its already a member of the cluster. Please let me know how to solve this problem. I need to know how to troubleshoot the node and add it back to the cluster.
With regards,
Gopinath.
(HowTos)

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